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提出一种设计自由曲面轮廓的方法以实现目标面特定区域照度均匀性为常数的目标, 该方法可应用于漫反射曲面间接照明系统。基于理想漫反射曲面和发光二极管朗伯特性, 推导了目标面照度分布函数的方程组。求解方程组得到曲面面型数据, 绕轴旋转得到漫反射自由曲面。根据目标面照明情况建立评价函数用于优化求解阵列间距。对系统用TracePro软件进行非序列光线追迹仿真, 仿真结果表明漫反射自由曲面间接照明目标面大小为50 mm圆形区域, 照明距离为200 mm, 均匀度达到91.5%, 效率为6.73%。对比间距优化的线性阵列、环形阵列和矩形阵列下的漫反射自由曲面间接照明与直射照明, 漫反射间接照明照度均匀性更高。仿真结果验证了方案的正确性和有效性。
关键词
Abstract
A method is proposed to design a freeform surface profile, which can make the illumination uniformity of the target surface location be a constant and can be used in the diffuse reflection surface indirect illumination system. Based on the ideal diffuse reflection freeform surface and light emitting diode Lambertian characteristics, equations of target plane illuminance distribution function are derived. The surface profile data is obtained by solving the equations. The diffuse reflection freeform surface is obtained by rotating around the axis. According to the illumination of the target surface, the evaluation function is built to optimize the solution of the array spacing. The non-sequential ray tracing simulation of the system is carried out by using TracePro software. The simulation results show that the target surface size is 50 mm circular area, the illumination distance is 200 mm under the indirect illumination of diffuse reflection freeform surface, the uniformity is 91.5%, and the effectiveness is 6.73%. Indirect illumination and direct illumination at diffuse reflection freeform surface for space optimized linear array, circular array and rectangular array are compared. Illumination uniformity of diffuse reflection freeform surface indirect illumination is better than that of direct illumination. The simulation results verify the correctness and effectiveness of the scheme.
补充资料
中图分类号:TN364+.2;TM923.01
DOI:10.3788/lop54.052201
所属栏目:光学设计与制造
基金项目:国家自然科学基金(51305137)、江西省科技支撑计划项目(20151BBE50116)、江西省杰出青年资助计划(20162BCB23047)、江西省发明专利产业化重点项目(20161BBM26037)
收稿日期:2016-11-02
修改稿日期:2017-03-08
网络出版日期:--
作者单位 点击查看
祝振敏:华东交通大学电气与自动化工程学院, 江西 南昌 330013
罗慧:华东交通大学电气与自动化工程学院, 江西 南昌 330013
联系人作者:祝振敏(zhuzhenmin1984@163.com)
备注:祝振敏(1984-), 男, 博士, 副教授, 主要从事LED应用光学设计方面的研究。
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引用该论文
Zhu Zhenmin,Luo Hui. Design Method of Diffuse Reflection Freeform Surface[J]. Laser & Optoelectronics Progress, 2017, 54(5): 052201
祝振敏,罗慧. 漫反射自由曲面的设计方法[J]. 激光与光电子学进展, 2017, 54(5): 052201
被引情况
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